Overview
The TPS7A7100RGWT is a low-dropout (LDO) voltage regulator produced by Texas Instruments. This device is designed for applications requiring very-low dropout capability, with a dropout voltage of 140 mV at 1 A. It offers a wide input voltage range from 1.5 V to 6.5 V and a configurable output voltage range from 0.9 V to 3.5 V in fixed mode, and up to 5 V in adjustable mode. The TPS7A7100 is known for its fast load-transient response, stability with ceramic output capacitors, and high accuracy over line, load, and temperature. It also features programmable soft-start and a power-good (PG) output for sequencing power rails.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VIN Supply Voltage | 1.425 | 6.5 | V | |
| VOUT Output Voltage (Fixed) | 0.9 | 3.5 | V | |
| VOUT Output Voltage (Adjustable) | 0.9 | 5 | V | |
| IOUT Output Current | 0 | 1 | A | |
| VDO Dropout Voltage | 140 | 350 | mV | |
| TJ Junction Temperature | -40 | 125 | °C | |
| COUT Output Capacitance | 4.7 | 200 | µF | |
| CFF Feedforward Capacitance | 0 | 100 | nF |
Key Features
- Low-dropout voltage: 140 mV at 1 A
- Wide input voltage range: 1.5 V to 6.5 V
- Configurable fixed VOUT range: 0.9 V to 3.5 V, and adjustable VOUT range: 0.9 V to 5 V
- Very good load- and line-transient response
- Stable with ceramic output capacitors
- High accuracy over line, load, and temperature: ±1.5% to ±3%
- Programmable soft-start
- Power-good (PG) output for sequencing power rails
- Available in 3-mm × 3-mm, 16-pin VQFN and 5-mm × 5-mm, 20-pin VQFN packages
Applications
- Wireless infrastructure
- RF components
- Set-top boxes
- PCs and printers
- Audio and visual equipment
Q & A
- What is the dropout voltage of the TPS7A7100 at 1 A?
The dropout voltage is 140 mV at 1 A. - What is the input voltage range of the TPS7A7100?
The input voltage range is from 1.5 V to 6.5 V. - What are the configurable output voltage ranges for the TPS7A7100?
The fixed output voltage range is from 0.9 V to 3.5 V, and the adjustable output voltage range is from 0.9 V to 5 V. - Is the TPS7A7100 stable with ceramic output capacitors?
Yes, the TPS7A7100 is stable with ceramic output capacitors. - What is the accuracy of the output voltage over line, load, and temperature?
The accuracy is ±1.5% to ±3% depending on the configuration and operating conditions. - Does the TPS7A7100 have a programmable soft-start feature?
Yes, it does have a programmable soft-start feature. - What is the purpose of the power-good (PG) output?
The power-good output is used for sequencing power rails. - In what packages is the TPS7A7100 available?
The TPS7A7100 is available in 3-mm × 3-mm, 16-pin VQFN and 5-mm × 5-mm, 20-pin VQFN packages. - What are some typical applications of the TPS7A7100?
Typical applications include wireless infrastructure, RF components, set-top boxes, PCs and printers, and audio and visual equipment. - What is the maximum output current of the TPS7A7100?
The maximum output current is 1 A.
